Car has 100K; trouble started at 90K back in February. Misfire in 3rd and 4th gear. Sluggish acceleration. Car performs better when gas is punched. *Very* intermittent soft "surging" and hesitation when shifting. Eventual transmission problems (more on that in a minute.) All service, general maintenance, fuel induction/filters/plugs/engine mounts/control arms/belts/etc. meticulously replaced for life of car.
Okay: Replaced all (5) coils. Transmission started hard shifting with minor "clunk" (hope that's descriptive enough!) New valve body and rebuilt transmission. Trans builder very, very reputable. Did dealer reset of transmission, replaced valve sensor (I think it was the valve sensor -pardon) and replaced fuel filter.
Sadly, car *still* has misfire/sluggish acceleration, and shifting problems. I *almost* want to guess that the "learning" part of the transmission has failed. Is that possible? This whole problem started after my ex drove it - probably hard - for about a week.
and cockily said (sorry gents) "it's a learning transmission. It'll be fine." (He's a tech.) Anyway - does anyone have a clue? I've been to the dealer, etc. and everyone is stumped. Luckily, I have an extended warranty! Yay! I adore my '04 (and currently own some 60's vintage volvos as well) because it reminds me of my old 245. I've searched many forums and can't find this exact problem. Would appreciate any and all help. I'm hoping to hit at least 200K with this car; it's my daily driver baby.